: Could someone explain what coherence means, when talking about one of the 4 characteristics of a laser? I understand intensity, directional and monochromic but I dont get coherence? 16 viewsMay 26, 2022 Question51.20K May 24, 2022 1 Comment I have seen it online but they are very complicated? ​ Thank you In: 1 SlightlyScruffy commented May 24, 2022 Think of light as a set of waves. Coherence is when all the peaks of those waves line up together so all those peaks hit a target at the same time. 0 Answers ActiveVotedNewestOldest Register or Login
Think of light as a set of waves. Coherence is when all the peaks of those waves line up together so all those peaks hit a target at the same time.